Idioms
weigh on/upon (someone)
to be a weight or pressure on someone or something, to worry or upset someone
The pressure of exams has begun to weigh upon my sister.
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Science Facts
Most bacteria are only about 0.00025 of a centimetre (0.0001 of an inch) across. But monster bacteria have been found at the bottom of the ocean off the coast of Africa. They are so big they can be seen without a microscope – they're each about the size of the dot of this full stop. .. More >>
Most bacteria are only about 0.00025 of a centimetre (0.0001 of an inch) across. But monster bacteria have been found at the bottom of the ocean off the coast of Africa. They are so big they can be seen without a microscope – they're each about the size of the dot of this full stop. .. More >>
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